package com.jjiang.bbmall.order.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.Exchange;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class MyMQConfig {

    // 加入容器中的会自动创建；一旦创建好队列后，就不会覆盖了
    @Bean
    public Queue orderDelayQueue() {
        // 设置参数
        Map<String, Object> args = new HashMap<>();
        args.put("x-dead-letter-exchange", "order-event-exchange");
        args.put("x-dead-letter-routing-key", "order.release.order");
        args.put("x-message-ttl", 10000);

        return new Queue("order.delay.queue", true, false, false, args);
    }

    @Bean
    public Queue orderReleaseQueue() {
        return new Queue("order.release.order.queue", true, false, false);
    }

    @Bean
    public Exchange orderEventExchange() {
        return new TopicExchange("order-event-exchange", true, false);
    }

    @Bean
    public Binding orderCreateOrderBinding() {
        return new Binding("order.delay.queue", Binding.DestinationType.QUEUE, "order-event-exchange", "order.create.order", null);
    }

    @Bean
    public Binding orderReleaseOrderBinding() {
        return new Binding("order.release.order.queue", Binding.DestinationType.QUEUE, "order-event-exchange", "order.release.order", null);
    }

    /**
     * 之间绑定到库存服务，订单被取消时直接发送给库存解锁队列
     *
     * @return
     */
    @Bean
    public Binding orderReleaseOtherBinding() {
        return new Binding("stock.release.stock.queue", Binding.DestinationType.QUEUE, "order-event-exchange", "order.release.other.#", null);
    }

    /**
     * 进行秒杀的消峰
     *
     * @return
     */
    @Bean
    public Queue orderSeckillOrderQueue() {
        return new Queue("order.seckill.order.queue", true, false, false);
    }

    @Bean
    public Binding orderSeckillOrderQueueBinding() {
        return new Binding("order.seckill.order.queue", Binding.DestinationType.QUEUE, "order-event-exchange", "order.seckill.order", null);
    }

}
